{"id":{"repo_id":"houston","oai_identifier":"oai:uh-ir.tdl.org:10657/774"},"canonical_url":"https://search.dev.ndltd.org/etd/houston/oai:uh-ir.tdl.org:10657/774","repository":{"repo_id":"houston","name":"University of Houston","base_url":"https://uh-ir.tdl.org/server/oai/request"},"display":{"title":"Modeling of Pipe Friction and Smear Effect in Drilling Operations","abstract":"The increased complexity of drilling programs has led to the development of new drilling techniques and has resulted in problems that were not encountered before. This study focuses on two such issues: 1) to model the influence of wellbore friction on downhole temperatures of the drilling fluid, 2) to understand the smear effect mechanism observed in a casing while drilling operation through mathematical studies. An analytical model has been proposed to estimate the increase in downhole wellbore temperatures during a drilling activity and subsequently validated for a deviated and a horizontal well using real-time data measured in the field. The contribution of wellbore temperatures and plugging of micro-fractures towards improving the fracture gradient of the formation has then been analyzed using quantitative studies aiming to provide a physical insight into the smear effect mechanism. Various parametric analyses have also been presented to help optimize future drilling programs.","abstract_html":"The increased complexity of drilling programs has led to the development of new drilling techniques and has resulted in problems that were not encountered before. This study focuses on two such issues: 1) to model the influence of wellbore friction on downhole temperatures of the drilling fluid, 2) to understand the smear effect mechanism observed in a casing while drilling operation through mathematical studies. An analytical model has been proposed to estimate the increase in downhole wellbore temperatures during a drilling activity and subsequently validated for a deviated and a horizontal well using real-time data measured in the field. The contribution of wellbore temperatures and plugging of micro-fractures towards improving the fracture gradient of the formation has then been analyzed using quantitative studies aiming to provide a physical insight into the smear effect mechanism. Various parametric analyses have also been presented to help optimize future drilling programs.","abstract_has_math":false,"creators":["Aniket 1986-"],"institution":"University of Houston","degree_name":"Master of Science","degree_level":"Masters","degree_discipline":"Petroleum Engineering","degree_department":null,"school":null,"contributors":[],"advisors":["Nikolaou, Michael"],"committee_chairs":[],"committee_members":["Samuel, Robello","Song, Gangbing"],"year":2012,"date_issued":"2012-08","date_published":"2012-08","updated_at":"2026-07-24T02:31:42Z","subjects":["Pipe Friction","Wellbore Friction","Smear Effect","Casing Drilling","Drilling","Drilling operations","Analytical models"],"languages":["eng"],"rights":["The author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s)."],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/10657/774","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Nikolaou, Michael"]},{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Samuel, Robello","Song, Gangbing"]},{"key":"dc:creator","label":"Author","values":["Aniket 1986-"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2014-11-21T18:42:29Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2014-11-21T18:42:29Z"]},{"key":"dc:date.issued","label":"Date","values":["2012-08"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Petroleum Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Houston"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Pipe Friction","Wellbore Friction","Smear Effect","Casing Drilling","Drilling","Drilling operations","Analytical models"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["The author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s)."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/10657/774"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The increased complexity of drilling programs has led to the development of new drilling techniques and has resulted in problems that were not encountered before. This study focuses on two such issues: 1) to model the influence of wellbore friction on downhole temperatures of the drilling fluid, 2) to understand the smear effect mechanism observed in a casing while drilling operation through mathematical studies. An analytical model has been proposed to estimate the increase in downhole wellbore temperatures during a drilling activity and subsequently validated for a deviated and a horizontal well using real-time data measured in the field. The contribution of wellbore temperatures and plugging of micro-fractures towards improving the fracture gradient of the formation has then been analyzed using quantitative studies aiming to provide a physical insight into the smear effect mechanism. Various parametric analyses have also been presented to help optimize future drilling programs."]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Modeling of Pipe Friction and Smear Effect in Drilling Operations"]}]}],"canonical_facts":{"dc:contributor.advisor":["Nikolaou, Michael"],"dc:contributor.committeemember":["Samuel, Robello","Song, Gangbing"],"dc:creator":["Aniket 1986-"],"dc:date.accessioned":["2014-11-21T18:42:29Z"],"dc:date.available":["2014-11-21T18:42:29Z"],"dc:date.issued":["2012-08"],"dc:description.abstract":["The increased complexity of drilling programs has led to the development of new drilling techniques and has resulted in problems that were not encountered before. This study focuses on two such issues: 1) to model the influence of wellbore friction on downhole temperatures of the drilling fluid, 2) to understand the smear effect mechanism observed in a casing while drilling operation through mathematical studies. An analytical model has been proposed to estimate the increase in downhole wellbore temperatures during a drilling activity and subsequently validated for a deviated and a horizontal well using real-time data measured in the field. The contribution of wellbore temperatures and plugging of micro-fractures towards improving the fracture gradient of the formation has then been analyzed using quantitative studies aiming to provide a physical insight into the smear effect mechanism. 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